PP is not like the other res. PP is more like Flags (kind of) since they are transferred between worlds.
Why is this important?
Because new-comers don't have flags, new-comers don't have PP. So don't see how that can be like the other resources.
Let's say I start playing on the net server now. People who have been playing for years have probably 100k PP on their accounts.
I have 800 PP. So to PP farm how much time would i need? A lot ... but other players aren't they increasing their stored PP also, oh yeah they are.
So am I gaining anything ... No. Because they still will spend PP much faster then me ... which means on startup they will still beat me.
PP ab/users are good at startup but they start losing on mid game and/or end game, etc (if they don't have skills).
I know that game can't be won just by PP. PP gives enough push to a player that others who use PP "normally" or don't use PP at all (other then PA and AM) don't have a chance.
Who are the abusers?
The ones who spends hundred of $$ of PP per day or more just to upgrade buildings faster, buy resources on market whenever they can (to not add here those damned market bots) and get as many items on Events (which are ab/usable without limit usually).
All of those, add up, piece by piece to give those PP players a lot of push compared to someone who is just using PA, AM, mine boosts, etc.
The in-balance of the game, inequality IMO is that a lot of people who sweat, put dedication and time and money and/or even farm PP on other worlds they still lose to someone who spends a lot of PP on a single day.
All the other factors, most important ones activity level, skills ... they all are null-ed when you fight a PP pushed player.
You have sweated to have half a nuke, probably farming and scavenging all day long and you have next to you someone with double your points (and you started on same day and you know your stuff). So how did he grow that fast?
Because he has magical powers? Nope ... he used PP.
So he goes for your village and he gets it. You try your best but at the end PP wins.
Red.